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196 lines
5.8 KiB
196 lines
5.8 KiB
;****************************************************************************** |
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;* MMX/SSE2-optimized functions for the RV30 and RV40 decoders |
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;* Copyright (C) 2012 Christophe Gisquet <christophe.gisquet@gmail.com> |
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;* |
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;* This file is part of Libav. |
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;* |
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;* Libav is free software; you can redistribute it and/or |
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;* modify it under the terms of the GNU Lesser General Public |
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;* License as published by the Free Software Foundation; either |
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;* version 2.1 of the License, or (at your option) any later version. |
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;* |
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;* Libav is distributed in the hope that it will be useful, |
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;* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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;* Lesser General Public License for more details. |
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;* |
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;* You should have received a copy of the GNU Lesser General Public |
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;* License along with Libav; if not, write to the Free Software |
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;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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;****************************************************************************** |
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%include "x86inc.asm" |
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%include "x86util.asm" |
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SECTION_RODATA |
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pw_row_coeffs: times 4 dw 13 |
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times 4 dw 17 |
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times 4 dw 7 |
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pd_512: times 2 dd 0x200 |
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pw_col_coeffs: dw 13, 13, 13, -13 |
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dw 17, 7, 7, -17 |
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dw 13, -13, 13, 13 |
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dw -7, 17, -17, -7 |
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SECTION .text |
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%macro IDCT_DC_NOROUND 1 |
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imul %1, 13*13*3 |
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sar %1, 11 |
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%endmacro |
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%macro IDCT_DC_ROUND 1 |
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imul %1, 13*13 |
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add %1, 0x200 |
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sar %1, 10 |
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%endmacro |
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%macro rv34_idct 1 |
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cglobal rv34_idct_%1_mmx2, 1, 2, 0 |
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movsx r1, word [r0] |
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IDCT_DC r1 |
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movd m0, r1d |
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pshufw m0, m0, 0 |
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movq [r0+ 0], m0 |
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movq [r0+ 8], m0 |
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movq [r0+16], m0 |
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movq [r0+24], m0 |
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REP_RET |
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%endmacro |
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INIT_MMX |
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%define IDCT_DC IDCT_DC_ROUND |
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rv34_idct dc |
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%define IDCT_DC IDCT_DC_NOROUND |
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rv34_idct dc_noround |
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; ff_rv34_idct_dc_add_mmx(uint8_t *dst, int stride, int dc); |
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cglobal rv34_idct_dc_add_mmx, 3, 3 |
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; calculate DC |
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IDCT_DC_ROUND r2 |
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pxor m1, m1 |
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movd m0, r2d |
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psubw m1, m0 |
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packuswb m0, m0 |
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packuswb m1, m1 |
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punpcklbw m0, m0 |
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punpcklbw m1, m1 |
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punpcklwd m0, m0 |
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punpcklwd m1, m1 |
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; add DC |
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lea r2, [r0+r1*2] |
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movh m2, [r0] |
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movh m3, [r0+r1] |
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movh m4, [r2] |
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movh m5, [r2+r1] |
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paddusb m2, m0 |
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paddusb m3, m0 |
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paddusb m4, m0 |
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paddusb m5, m0 |
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psubusb m2, m1 |
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psubusb m3, m1 |
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psubusb m4, m1 |
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psubusb m5, m1 |
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movh [r0], m2 |
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movh [r0+r1], m3 |
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movh [r2], m4 |
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movh [r2+r1], m5 |
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RET |
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; Load coeffs and perform row transform |
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; Output: coeffs in mm[0467], rounder in mm5 |
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%macro ROW_TRANSFORM 1 |
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pxor mm7, mm7 |
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mova mm0, [%1+ 0*8] |
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mova mm1, [%1+ 1*8] |
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mova mm2, [%1+ 2*8] |
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mova mm3, [%1+ 3*8] |
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mova [%1+ 0*8], mm7 |
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mova [%1+ 1*8], mm7 |
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mova [%1+ 2*8], mm7 |
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mova [%1+ 3*8], mm7 |
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mova mm4, mm0 |
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mova mm6, [pw_row_coeffs+ 0] |
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paddsw mm0, mm2 ; b0 + b2 |
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psubsw mm4, mm2 ; b0 - b2 |
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pmullw mm0, mm6 ; *13 = z0 |
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pmullw mm4, mm6 ; *13 = z1 |
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mova mm5, mm1 |
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pmullw mm1, [pw_row_coeffs+ 8] ; b1*17 |
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pmullw mm5, [pw_row_coeffs+16] ; b1* 7 |
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mova mm7, mm3 |
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pmullw mm3, [pw_row_coeffs+ 8] ; b3*17 |
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pmullw mm7, [pw_row_coeffs+16] ; b3* 7 |
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paddsw mm1, mm7 ; z3 = b1*17 + b3* 7 |
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psubsw mm5, mm3 ; z2 = b1* 7 - b3*17 |
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mova mm7, mm0 |
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mova mm6, mm4 |
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paddsw mm0, mm1 ; z0 + z3 |
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psubsw mm7, mm1 ; z0 - z3 |
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paddsw mm4, mm5 ; z1 + z2 |
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psubsw mm6, mm5 ; z1 - z2 |
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mova mm5, [pd_512] ; 0x200 |
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%endmacro |
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; ff_rv34_idct_add_mmx2(uint8_t *dst, ptrdiff_t stride, DCTELEM *block); |
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%macro COL_TRANSFORM 4 |
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pshufw mm3, %2, 0xDD ; col. 1,3,1,3 |
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pshufw %2, %2, 0x88 ; col. 0,2,0,2 |
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pmaddwd %2, %3 ; 13*c0+13*c2 | 13*c0-13*c2 = z0 | z1 |
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pmaddwd mm3, %4 ; 17*c1+ 7*c3 | 7*c1-17*c3 = z3 | z2 |
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paddd %2, mm5 |
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pshufw mm1, %2, 01001110b ; z1 | z0 |
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pshufw mm2, mm3, 01001110b ; z2 | z3 |
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paddd %2, mm3 ; z0+z3 | z1+z2 |
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psubd mm1, mm2 ; z1-z2 | z0-z3 |
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movd mm3, %1 |
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psrad %2, 10 |
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pxor mm2, mm2 |
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psrad mm1, 10 |
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punpcklbw mm3, mm2 |
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packssdw %2, mm1 |
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paddw %2, mm3 |
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packuswb %2, %2 |
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movd %1, %2 |
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%endmacro |
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INIT_MMX mmx2 |
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cglobal rv34_idct_add, 3,3,0, d, s, b |
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ROW_TRANSFORM bq |
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COL_TRANSFORM [dq], mm0, [pw_col_coeffs+ 0], [pw_col_coeffs+ 8] |
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mova mm0, [pw_col_coeffs+ 0] |
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COL_TRANSFORM [dq+sq], mm4, mm0, [pw_col_coeffs+ 8] |
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mova mm4, [pw_col_coeffs+ 8] |
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lea dq, [dq + 2*sq] |
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COL_TRANSFORM [dq], mm6, mm0, mm4 |
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COL_TRANSFORM [dq+sq], mm7, mm0, mm4 |
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ret |
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; ff_rv34_idct_dc_add_sse4(uint8_t *dst, int stride, int dc); |
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INIT_XMM |
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cglobal rv34_idct_dc_add_sse4, 3, 3, 6 |
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; load data |
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IDCT_DC_ROUND r2 |
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pxor m1, m1 |
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; calculate DC |
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movd m0, r2d |
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lea r2, [r0+r1*2] |
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movd m2, [r0] |
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movd m3, [r0+r1] |
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pshuflw m0, m0, 0 |
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movd m4, [r2] |
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movd m5, [r2+r1] |
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punpcklqdq m0, m0 |
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punpckldq m2, m3 |
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punpckldq m4, m5 |
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punpcklbw m2, m1 |
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punpcklbw m4, m1 |
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paddw m2, m0 |
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paddw m4, m0 |
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packuswb m2, m4 |
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movd [r0], m2 |
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pextrd [r0+r1], m2, 1 |
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pextrd [r2], m2, 2 |
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pextrd [r2+r1], m2, 3 |
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RET
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